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AtlanTecRF launches its new and innovative range of Noise Injection LTT Test Systems - designed to cut the testing time of satellite communications systems and modems

AtlanTecRF, a leading global RF and microwave components and equipment manufacturer, today launched its LNI series of Noise Injection Loop Test Translator Systems.

This unique product provides the satellite communications engineer with a complete and versatile set up for off-satellite loop back testing of the transmit (Tx) signal to L-band combined with the ability to inject white symmetrical gaussian noise for simultaneous receiver and modem testing.

The loop test (LTT) function is controllable in terms of input attenuation over a 60dB range in 0.5dB steps and local oscillator (LO) frequency in 25MHz steps while the white noise level is variable by up to 60dB in 0.25dB steps with an additional mute facility.

The LTT has a typical 0dB conversion loss at zero input attenuation selected while the base noise level generated is nominally -84dBm/Hz and is injected via a variable attenuator and 20dB directional coupler into the LTT's L-band output. The noise level can be muted completely for LTT only operation and is also switchable to an external output for noise only operation. Filtering is included to prevent noise appearing at the Tx input port or mixing with the synthesised LO output.

Control of both LTT and noise injection is effected by either front panel controls or remotely via ethernet with easy-to-use GUI. Frequency stability of the LO is derived from either the internal OCXO or from a system 10MHz reference.

Speaking at the product launch at Satellite 2017 in Washington, D.C., Geoff Burling, AtlanTecRF C.E.O. said "This new, exciting and revolutionary test system will cut testing time by combining the normal loop back signal test with noise injection at modem level, all in one compact 2U rack unit. Whether in factory system testing, or at a satcom ground terminal, this unique product will greatly enhance the capability for satellite communications engineers".

In addition to the 2U x 19" configuration, the AtlanTecRF LNI noise injection LTT systems are available in portable bench mount instruments for transportation to multiple test sites and laboratory locations.

AtlanTecRF Loop Test and Noise Injection System Datasheet

T: +44 (0)1376 550220 F: +44 (0)1376 552145 E: 40A Springwood Drive, Braintree, Essex CM7 2YN, England